Motion-Detecting Module

1. A motion-detecting module, comprising: a PCB; a light-emitting unit electrically disposed over the PCB, the light-emitting unit includes a light-emitting die mounted to the PCB and electrically coupled thereto by a pair of leads, the light-emitting die and pair of leads being encapsulated by a material having a contour to form a lens; and a light-sensing unit having a light-sensing die electrically disposed on the PCB and a package cover covered on the light-sensing die, wherein the package cover has a through hole corresponding to the light-sensing die, a transparent element disposed in the through hole and an imaging lens overlaying the hole.

2. The motion-detecting module as claimed in claim 1 , wherein the light-emitting die provides a coherent illumination.

3. The motion-detecting module as claimed in claim 1 , wherein the package cover is opaque.

4. The motion-detecting module as claimed in claim 1 , wherein the transparent element is selected from the group consisting of a transparent glass and a transparent colloid.

5. The motion-detecting module as claimed in claim 4 , wherein the transparent colloid is formed of a material selected from the group consisting of an epoxy composition and an acrylic material.

6. The motion-detecting module as claimed in claim 1 , wherein the imaging lens is formed of a material selected from the group consisting of an epoxy composition and an acrylic material.

7. The motion-detecting module as claimed in claim 1 , wherein the light-emitting die provides an incoherent illumination.